Severino (5-1) racked up 11 strikeouts in Tuesday's no-decision, allowing two earned runs on six hits and no walks over six innings against the Red Sox.
Severino came out for the top of the seventh and gave up a leadoff single to Eduardo Nunez before being pulled. Nunez then stole second base and scored the tying run on Mookie Betts' two-out triple. The 24-year-old continued his stellar start to the season and now has a 2.21 ERA and 0.87 WHIP with 63 strikeouts and 12 walks over 53 innings. The right-hander is next slated to start Sunday at home against the Athletics.